Fred T. Hodgson · Frederick J. Drake and Co. · leaf 489
be well wetwith water and then covered with a rough coatingof cement mortar, composed of one part Portland ee- HOW TO USE THEM 485 ment and two parts clean sharp sand. When tiles areplaced on metal lathing, hair should be mixed with thecement mortar to make it adhere more closely to thelath. The… … Fig. 37. a^space of xf> inch for the cement mortar, composed asabove for rough coating the walls. The face of thecement foundation should be roughly scratched andallowed to harden for at least one day before com-mencing to lay the tile. If any lime is mixed with thecement mortar for setting the…